Measurement Ch.1.

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Presentation transcript:

Measurement Ch.1

Systems of Measurement Different systems used throughout the world English system - what we use Ex: gallon, inches, pound, etc. Metric system - scientists, Europe, other parts of world Ex: kilometer, liter, gram

Length Measures distance between 2 points Units: Meter (m) Kilometer (km) = 1000 meters Centimeter (cm) = 0.01 meters Millimeter (mm) = 0.001 meters Tools - Ruler, meter stick, measuring tape

Length Tools

Mass Measures how much matter is in an object Units: Kilogram (kg) = 1000 grams Gram (g) Milligram (mg) = 0.001 grams Tools - triple beam balance, electronic balance Density: mass per unit volume of a material Mass/volume

Balance for Measuring Mass

Volume How much space an object takes up Units: Liter (L) Milliliter (mL) = 0.001 Liters Cubic centimeter (cm3) - same as milliliter Tools - Graduated Cylinder, L x W x H

Volume Tools Graduated Cylinders L x W x H

Temperature Units: Fahrenheit (F) Celsius (C) Kelvin (K) Tools – Thermometer, temperature probe

Converting between SI Units

Precision & Accuracy Accuracy = how correct a measurement or # is. Precision = how close together the #s are Precise, Low Precise & Accurate Accurate, Low Accuracy Precision